dic1 = {'python':34, 'php':1000, 'java':12, 'c':19, 'c++':18}
dic2 = {'c#':765, 'php':99, 'java':8371}
dic3 = {'c#':19, 'vb':32, 'java':1}
dic4 = {**dic1 , **dic2, **dic3}
print(dic4)
'''
run:
{'python': 34, 'php': 99, 'java': 1, 'c': 19, 'c++': 18, 'c#': 19, 'vb': 32}
'''